Piya's place was great, she let me check in a few hours ahead of my check in time.
The listing is literally right next to a BTS station, there is a wee food market outside the complex and a few 7/11s within mins. There is also a pool & small gym at the the top of the complex which was great to use, especially in the Bangkok heat.
Getting in and out the city was very easy due to the BTS and the fact that a lot of taxi drivers knew where the complex was located.